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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 46 (1962)

Issue: 2. (February)

First Page: 266

Last Page: 267

Title: Application of Previous HitDigitalNext Hit Computers to Exploration Operations: ABSTRACT

Author(s): James M. Forgotson, Jr.

Article Type: Meeting abstract

Abstract:

The use of Previous HitdigitalNext Hit computers in exploration is oriented toward furnishing the geologist an additional tool. Two types of operations are performed by Previous HitdigitalNext Hit computer installations. Data processing involves filing, sorting, and comparing a large volume of data that require a small number of arithmetical Previous HitcalculationsNext Hit for each of many data entries. Computing involves the solution of mathematical formulas and includes problems requiring relatively few data but many arithmetical Previous HitcalculationsNext Hit.

Data processing is often merely a system for rapid recall of information and as such is being investigated

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as a means of handling scout information. Well locations, formation tops, rock-type thicknesses within a stratigraphic interval, and paleontological and depth zone data can be recorded in numerical form on cards or tape for computer input. From such input the computer can calculate structure, isopach, and various types of lithofacies, biofacies, and environmental data for map preparation. Card or tape computer output can be printed rapidly on data sheets and then plotted manually on maps, or automatic plotting equipment may be used to print the output directly on base maps.

Second derivative Previous HitcalculationsNext Hit based on gravity and magnetic data can be performed rapidly on a computer. The results can be automatically plotted so that the maxima and minima are readily apparent without manual contouring.

Computer-automatic plotter systems can accept locations and data values for large numbers of points and produce contoured maps based on the input values.

For a map containing 1,000 irregularly spaced data points, several months would be required to perform the computations on a desk calculator to separate the observed data into regional and local components. These Previous HitcalculationsNext Hit are performed on the IBM 650 in one hour and on the IBM 704 in two minutes.

Computers are a available within major companies, and to smaller organizations and independents through service bureaus. Converting large volumes of geological data to a form suitable for computer input can be done economically with proper planning by computer-oriented geologists. The exploration geologist should become sufficiently familiar with computers to recognize problems in which they can be used advantageously.

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